Abstract
In Smart Grids, the real-time information measured by distributed sensors is transmitted through communication networks to create an automated energy delivery network. The communication reliability of communication networks in Smart Grids is of great importance, especially under the impact of natural disasters, which are the most common threats to the reliability of power grids. In this paper, the seismic impacts on communication networks in Smart Grids are analyzed, including the modeling of earthquakes, the fragility probability computing of power grids, and the seismic impacts on power line communication (PLC) channel. Based on these analyses, the network capacity is analyzed and the postearthquake network capacity is obtained through the formulations based on an arbitrary network model. The achievable data rates of a practical network are obtained through simulations on a simulated random topology according to practical parameters. To enhance the communication robustness of Smart Grids against earthquakes, a robust routing protocol based on greedy perimeter stateless routing (R-GPSR) is proposed. The simulation results show significant improvements in the reliability and expectation channel capacity of the communication network under the impacts of earthquakes with different magnitudes.
Highlights
The Smart Grid refers to the next-generation electrical power grid that aims to create a widely distributed automated energy delivery network [1]
From a technical view point, the communication infrastructure of the Smart Grid covers two subsystems: the smart information subsystem, which is responsible for advanced information metering, monitoring, and management; and the smart communication subsystem, which is responsible for communication connectivity and information transmission among systems, devices, and applications
The earthquakes can destroy the components of the power grid, cause changes in the topology, and change the performance of communication channels resulting in severe damage to the communication network in Smart Grids
Summary
The Smart Grid refers to the next-generation electrical power grid that aims to create a widely distributed automated energy delivery network [1]. As the next-generation power grid, the Smart Grid, including its communication subsystem, needs to improve its reliability and have its emergency countermeasures against earthquakes. The earthquakes can destroy the components of the power grid, cause changes in the topology, and change the performance of communication channels resulting in severe damage to the communication network in Smart Grids. The seismic impacts on communication networks in Smart Grids are modeled, the channel capacity and network capacity are analyzed, and a robust routing protocol (R-GPSR) is proposed. We apply a seismic ground motion model, estimate the fragility probability of substations, and analyze the topology change of power grids. We model the seismic impacts on the communication network of Smart Grids by analyzing the channel capacity and network capacity changes of the PLC network of the SCADA system in the Smart Grid communication subsystem.
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